'Protecting groups' diaporamas de présentation

Protecting Groups: How They Work

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PROTECTING GROUPS

under mild conditions. it is introduced into the molecule to be protected. in a selective manner. in high yield. it does not attack functional groups other than that to be protected. IF.

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Synthesis

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Chapter 11 Alcohols and Ethers

Chapter 11 Alcohols and Ethers. Nomenclature Nomenclature of Alcohols (Sec. 4.3F) Nomenclature of Ethers Common Names The groups attached to the oxygen are listed in alphabetical order IUPAC Ethers are named as having an alkoxyl substituent on the main chain.

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Chapter 11: Alcohols and Ethers

Chapter 11: Alcohols and Ethers. Alcohols and Ethers: Structure and Properties (Sections 11.1-2) Important Alcohols and Ethers (Section 11.3) Synthesis of Alcohols from Alkenes (Section 11.4; Chapter 8) Reactions of Alcohols (Section 11.5) Old Acid Base Stuff (Section 11.6, Chapter 3)

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Chapter 11: Alcohols and Ethers

Chapter 11: Alcohols and Ethers. Alcohols and Ethers: Structure and Properties (Sections 11.1-2) Important Alcohols and Ethers (Section 11.3) Synthesis of Alcohols from Alkenes (Section 11.4; Chapter 8) Reactions of Alcohols (Section 11.5) Old Acid Base Stuff (Section 11.6, Chapter 3)

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Chap. 6 Alcohols and Ethers Solomons: Chapter 11

Chap. 6 Alcohols and Ethers Solomons: Chapter 11. Physical Properties of Alcohols and Ethers Ether boiling points are roughly comparable to hydrocarbons of the same molecular weight Molecules of ethers cannot hydrogen bond to each other Alcohols have considerably higher boiling points

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C-C bond forming reactions Known C-C bond forming reactions

C-C bond forming reactions Known C-C bond forming reactions (New C-C bond forming reactions in KJM3200) Organometallic coupling C-C bond forming reactions Protecting groups in organic synthesis. Addition to carbonyl groups. See also lab ex 6. Conjugate addition.

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C-C bond forming reactions Known C-C bond forming reactions

C-C bond forming reactions Known C-C bond forming reactions (New C-C bond forming reactions in KJM3200) Organometallic coupling C-C bond forming reactions Protecting groups in organic synthesis. Addition to carbonyl groups. See also lab ex 6. Conjugate addition.

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Acid Hydrolysis / Base Hydrolysis / Hydrogenolysis

removed in basic conditions. The Use of Orthogonally Stable Protecting Groups. Acid Hydrolysis / Base Hydrolysis / Hydrogenolysis. Fluoride-Labile Protecting Groups in Combination with Oxidation-Labile Functions. Modulated Lability of Silyl Protecting Groups.

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CHEMISTRY 4000

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Alcohol Protecting Groups

Alcohol Protecting Groups. The protecting groups are used to protect primary alcohols from reacting Added before the reaction and removed after. Alcohol Protecting Groups. Silyl Ethers Tert-butyldimethylsilyl (TBDMS) Base = pyridine, imidazole Removal: fluoride ion. Triethylamine.

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